You do not usually think about rekeying until something changes fast – a move, a breakup, a missing key, a former employee, or a tenant who just moved out. That is usually the right moment to ask when should you rekey locks, because the answer is less about the age of the lock and more about who might still have access.
Rekeying is one of the simplest ways to regain control over a property without replacing every piece of hardware on the door. For homeowners and businesses in Denver, it is often the most practical option when the lock itself still works well but the key history is no longer something you can trust.
What rekeying actually does
Rekeying changes the internal pins inside a lock so the old key no longer works. The lock stays in place, but it is set up to accept a new key. If the hardware is in good condition, this can restore security without the added cost of full replacement.
That is different from changing locks. A full lock change means replacing the lock hardware itself. Sometimes that is necessary, especially if the lock is damaged, outdated, low quality, or no longer matches the level of security you want. But in many cases, rekeying gets the job done faster and more affordably.
When should you rekey locks after moving?
If you just moved into a house, condo, townhouse, or apartment, rekeying should be near the top of your list. You do not know how many copies of the old keys exist or who still has them. Previous owners, contractors, dog walkers, house cleaners, neighbors, and family members may all have had access at some point.
Even if the seller handed over every key they know about, there is no real way to verify that every copy was returned. Rekeying gives you a clean start. It is one of the first security steps that makes sense before you settle in.
For rental properties, the same logic applies between tenants. Property managers and landlords need to know exactly who has access. If keys were shared, lost, or not fully returned, rekeying helps avoid a preventable security problem.
Lost keys, stolen keys, and keys that are just unaccounted for
If a key goes missing, rekeying is usually the safe move. The level of urgency depends on what was lost and whether your address or business location could be connected to the key.
If you dropped a house key somewhere random and it had no identifying information, the risk may be lower. If you lost a key ring with your ID, work badge, or address attached, that is a different situation. The same goes for stolen purses, backpacks, or company key sets. Once there is a realistic chance someone can connect the key to your property, rekeying should not wait.
For businesses, one missing key can create more than a security issue. It can become an accountability problem. If several employees share copies and one disappears, rekeying can be the cleanest way to reset access and tighten key control.
After a breakup, roommate move-out, or family change
This is one of the most common reasons people call a locksmith, and for good reason. If someone no longer lives with you or no longer should have access, rekeying is the direct way to fix it.
That does not always mean there is a threat. Sometimes the relationship ended on decent terms, but copies of keys may still be out there. Rekeying removes uncertainty. If the split was tense, there is even more reason to act quickly.
The same applies when a roommate moves out, a caregiver arrangement ends, or a family member who once had regular access no longer needs it. In all of these situations, the main issue is control. You want to know exactly which key opens the door and who has it.
Rekey after a break-in or attempted break-in
A break-in does not always mean the lock was compromised, but it is a strong signal that your security setup needs a close look. If someone entered with a key, had access to a copied key, or took keys during the incident, rekeying is a practical next step.
If the lock shows damage, then replacement may make more sense than rekeying. The same is true if the door hardware is weak, loose, or outdated. A locksmith can inspect the condition of the lock, deadbolt, strike area, and door alignment to help you decide whether rekeying is enough or if upgraded hardware would serve you better.
Security work after a break-in should be based on the actual condition of the door and lock, not guesswork. Sometimes rekeying is the answer. Sometimes it is only part of the fix.
Employee turnover and business access changes
Commercial properties often need rekeying more often than owners expect. Staff changes, management turnover, vendor access, temporary workers, and former employees all create opportunities for keys to stay in circulation longer than they should.
If an employee with key access leaves the company, especially under poor circumstances, rekeying should be considered right away. That matters even more for offices, retail stores, warehouses, and buildings with restricted areas such as cash rooms, server rooms, inventory areas, or private offices.
In some businesses, a rekey can be limited to a specific door or department. In others, it makes sense to review the whole key system. If you already use a master key setup, changes need to be handled carefully so the system still works the way it should. Rekeying in a commercial setting is often less about a single lock and more about preserving access structure without creating confusion.
When rekeying makes sense instead of changing locks
If the lock is reliable, properly installed, and worth keeping, rekeying is often the better value. It is usually faster than replacing all the hardware, and it lets you keep the same style and finish on the door.
It also makes sense when you want multiple doors keyed alike. A locksmith can often rekey compatible locks so one key works across selected entry points. That can be useful for homeowners who want to simplify access or for small businesses trying to reduce bulky key rings.
But there are limits. Rekeying is not the right answer if the lock is worn out, sticking, loose, low security, or built from cheap hardware that is already failing. In those cases, replacement may solve both the key problem and the hardware problem at once.
Signs you should replace the lock instead
If your key is hard to turn, the deadbolt does not align well, the cylinder is damaged, or the hardware has visible wear, replacing the lock may be smarter than rekeying it. Rekeying changes the key operation, but it does not repair a failing mechanism.
You may also want replacement if your current lock does not meet your security goals. For example, some homeowners move from basic hardware to stronger deadbolts or keyless entry. Some businesses need better commercial-grade hardware, restricted keyways, panic hardware, or access control features. In those cases, rekeying the old lock may save money short term but not solve the real issue.
How often should locks be rekeyed?
There is no fixed schedule for every property. Rekeying is event-driven. You do it when access control changes, not just because a certain number of months has passed.
For homes, the trigger is usually a move, lost key, relationship change, or security concern. For rentals, it is often tenant turnover. For businesses, it may be tied to staffing changes, vendor turnover, expansion, internal security policy, or a missing key incident.
If you are asking whether it is time, the better question is this: are you fully confident about who has every working copy of your keys? If the answer is no, rekeying is worth considering.
A practical way to decide
If the lock is in good shape and your main concern is old keys still working, rekeying is usually the practical move. If the lock is damaged, outdated, or not giving you the level of security you want, replacement is probably the better investment.
For many Denver-area property owners, the real challenge is not understanding the difference. It is getting someone to handle it quickly on site. That is where a mobile locksmith can save time by inspecting the hardware, rekeying what makes sense, and pointing out when a lock change would be the smarter option. Broadway Lock & Key handles both, which makes it easier to fix the actual problem instead of guessing from the hardware aisle.
If there is any doubt about who can get in, that doubt has value. Acting before it turns into a problem is usually the cheaper and less stressful call.
